I like to use the HUE camera because it’s connected to my laptop. It helped me during distance learning because I can record my screen. It was very helpful. It’s available at a good price point.

Planepolarized light

The reason I went for the HUE HD cam is that it has a gooseneck and a focus ring, and it’s small. Perfect for working with time constraints while making visually interesting shots and moves.

In many respects, light can be described as a wave phenomenon (→ wave optics). More specifically, light waves are recognized as electromagnetic transverse waves, i.e., with transverse oscillations of the electric and magnetic field.

Pick which video chat network you wish to join, download the software from their website and follow their setup instructions. Make sure you set the USB camera as your camera and microphone in the new app’s settings, then you’re ready to chat!

This affordable teaching resource can be used across the curriculum, offering exceptional value for money. It is very popular with teachers, who use it in innovative ways to support the learning and development of their students both in class and remotely.

On the other hand, the polarization state of the laser output can be disturbed e.g. by random (and temperature-dependent) birefringence, such as occurs e.g. in optical fibers (if they are not polarization-maintaining or single-polarization fibers) and also in laser crystals or glasses as a result of thermal effects (→ depolarization loss). If the laser gain is not polarization-dependent, small drifts of the birefringence may lead to large changes of the polarization state, and also a significant variation in the polarization state across the beam profile.

While optical activity usually results from the presence of chiral molecules, with a concentration difference between the two possible enantiometers, it can also be induced by a magnetic field in a substance which is not naturally optically active. That is called the Faraday effect, and is exploited in Faraday rotators and Faraday isolators.

Your first plot shows the magnetic and electric field in phase – which is wrong. The magnetic field is made from the changing electric field. The two fields swap energy back and forth. Hence the magnetic field is at a maximum when the electric field has the largest rate of change, that is, at zero E field. The magnetic field zeros in strength when the electric field rate of change is zero, at it's peak. These are a simple consequence of Maxwell's Equations and is covered in most any text on E&M. The worst error I have found in years of use of your marvelous resource!

Linearlypolarized light

There are also azimuthally polarized beams, where the electric field direction at any point is tangential, i.e., perpendicular to a line through the point and the beam axis.

Je vous remercie vivement pour votre réponse rapide, très détaillée et très précise. Grâce à vos explications j’ai réussi à utiliser la caméra, c’est parfait ! Merci beaucoup.

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The results in the light rays all projecting as a beam. Outside of lighthouses and movie sets, Fresnel lenses are also used in car headlights and those large, ...

This camera exceeds expectations. It’s plug and play design makes is super easy to set up, and transport anywhere. It’s sleek design makes it easy to use in tight spaces which classrooms tend to be. I’ve used it to record videos for distance learning, but also used it as a document camera in my classroom.

P polarized lightmeaning

We use the cameras with our Year 2 pupils. The most exciting part of HUE is the animation aspect. The children love seeing their images move. We have also used them in class as a visualiser.

The HUE HD camera makes it very easy to quickly take snapshots. Share ideas, sketches and notes in real-time to support discussions and make more efficient decisions.

Optimal image capture with the camera in its base is an A5 page (half US letter size). The camera can be placed on a higher surface if a larger capture area is required. If you need to capture a larger area, we recommend choosing the HUE HD Pro camera instead.

There are cases where polychromatic light can be described with a single Jones vector, since all its frequency components have essentially the same polarization state. However, the polarization state is substantially frequency-dependent in other cases.

Ellipticallypolarized light

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The polarization state of light often matters when light hits an optical surface under some angle. A linear polarization state is then denoted as p polarization when the polarization direction lies in the plane spanned by the incoming beam and the reflected beam. The polarization with a direction perpendicular to that is called s polarization. These indications have a German origin: s = senkrecht = perpendicular, p = parallel.

Using the camera to enlarge small objects or text enables students with visual impairments or special needs (SEN) to fully participate in classes or online activities.

The camera has an HD native video resolution of 1280 x 720 (720p) and supports frame rates up to 30 fps. Video can be scaled down on lower resolution screens.

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Note: It can be plugged directly into an interactive flat panel display if the panel has its own built-in operating system.

If you’re gaming, animating, vlogging or streaming you can set the camera up as a facecam, handcam or keyboard cam (e.g. when teaching piano). The microphone makes it easy to share audio from other gamers around your table, or to capture ambient sounds. The camera can be used in conjunction with your onboard camera where needed.

One distinguishes left and right circular polarization (see Figure 2). For example, left circular polarization means that the electric (and magnetic) field vector rotates in the left direction, seen in the direction of propagation. For an observer looking against the beam, the rotation of course has the opposite direction.

Note that a very small gain or loss difference for the two polarization directions can be sufficient for obtaining a stable linear polarization, provided that there is no significant coupling of polarization modes within the laser resonator.

Circularlypolarized light

Many third party camera apps have options to flip and mirror the live video, as described in our detailed guide to flipping and mirroring the camera feed.

In a recent OFSTED inspection an inspector commented on the use of the visualiser (HUE HD) in a Food Studies lesson and the positive impact it had.

s-polarization vsppolarization

First Chapter Friday with the hue_hd! Our HUE HD camera is so versatile; we use it with everything! As a teacher, it is so easy to set up and easily able to be moved around the classroom. It can be used in ALL subject areas! We love using our HUE HD to introduce new books on Fridays & did I mention that it’s totally affordable too?

Stream or record videos using your computer’s native camera apps or Zoom, Google Meet, Microsoft Teams, Skype, QuickTime, Seesaw, Loom, FaceTime, Discord, Twitch, Slack, OBS, Webex, Chime and many more.

There are also partially polarized states of light. These can be described with Stokes vectors (but not with Jones vectors). Further, one can define a degree of polarization which can be calculated from the Stokes vector and can vary between 0 (unpolarized) and 1 (fully polarized).

The polarization state of monochromatic light is often described with a Jones vector, having complex electric field amplitudes for <$x$> and <$y$> direction, if propagation occurs in <$z$> direction. That Jones vector may be constant over some area across the beam, or it may vary, for example for a radially polarized beam (see above). The effect of optical elements such as waveplates, polarizers and Faraday rotators can be described with Jones matrices, with which the Jones vectors can be transformed by multiplication. (One assumes a linear relationship between input and output amplitudes.) A whole sequence of such optical elements can be described with a single Jones matrix, which is obtained as the product of the matrices corresponding to the components.

My comment is about HUE customer service. Our school ordered approximately 16 HUE HD cameras for teachers to use in both ELA and Math last school year. This year we had an issue with one of the cameras that was not working. I contacted HUE and they are sending a replacement! It was quick; easy, and no hassle!

In the previous cases, the direction of the electric field vector was assumed to be constant over the full beam profile. However, there are light beams where that is not the case. For example, there are beams with radial polarization, where the polarization at any point on the beam profile is oriented in the radial direction, i.e., away from the beam axis.

Compatible with Windows, macOS, Linux and Chrome OS. The camera is a Plug & Play* device so there is no need to install drivers. Simply connect it to your computer’s USB port and select it in any application that recognises a USB camera, such as QuickTime or the built-in ‘Camera’ apps for Windows and Chrome OS.

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Absolutely love using ‘HUE’, best classroom tool and even my class prefer them over iPad Reflector software. My classroom teaching and assessment would be incomplete without HUE.

I have used the camera for my son’s online classes it has really helped us in the session. The tutor recommended it to us and it has really made the sessions better to manage. I can switch anytime in between so that the tutor can see my son or the work he is producing. The quality is really good and very easy to operate. Overall, I’m very satisfied with it. 🙂

Linearly polarized light can be depolarized (made unpolarized) with a polarization scrambler, which applies the mentioned random polarization changes, or at least quasi-random changes.

As explained above, a waveplate or other birefringent optical element may rotate the direction of linear polarization, but more generally one will obtain an elliptical polarization state after such an element. True polarization rotation, where a linear polarization state is always maintained (just with variable direction), can occur in the form of optical activity. Some optically active substances such as ordinary sugar (saccharose) can produce substantial rotation angles already within e.g. a few millimeters of propagation length. Optical activity can be accurately measured with polarimeters.

Of course, the polarization can have any other direction perpendicular to the beam axis. Note that a rotation of the polarization by 180° does not lead to a physically distinct state.

Note that radial or azimuthal polarization state requires a zero electric field strength and thus also a vanishing optical intensity on the beam axis; it is not compatible with a Gaussian beam, for example. Radially polarized beams frequently exhibit a kind of donut profile.

With 360° rotation, the flexible USB camera can view difficult-to-capture angles, producing images and video which can be shared with a projector, interactive whiteboard or TV screen.

A laser beam might be collimated, might have a high enough divergence so as not to be considered (well?) collimated. We'll argue about this ...

The all-in-one HUE HD camera contains everything you need to take photos and make recordings without requiring an external microphone, separate tripod or stand; all that you have to do is connect it to your computer.

Fully polarized states can be associated with points on the so-called Poincaré sphere. Partially polarized states correspond to points inside that sphere; unpolarized light is represented by the point at its center.

In the simplest case, a light beam is linearly polarized, which means that the electric field oscillates in a certain linear direction perpendicular to the beam axis, and the magnetic field oscillates in a direction which is perpendicular both to the propagation axis and the electric field direction. The direction of polarization is taken to be the direction of the electric field oscillations (i.e., not the magnetic ones). For example, a laser beam propagating in <$z$> direction may have the electric field oscillations in the vertical (<$y$>) direction and the magnetic field oscillations in the horizontal (<$x$>) direction (see Figure 1); it can be called vertically polarized or <$y$>-polarized. In a different perspective, this is also shown in the second part of Figure 2.

HUE cameras are Plug & Play and will work with any application that recognises a USB video device, such as built-in camera apps on an interactive display or the camera apps included with Windows, Chrome OS, macOS and other operating systems.

I use the HUE camera when I’m threading up sewing machines. It’s always tricky demonstrating small things, my colleague and I both use the camera in our art lessons now. I can plug it directly into the Promethean monitor too, so it’s perfect for sewing machine, batik demonstrations.

The camera’s built-in microphone is perfect for recording a music lesson, podcast, or gaming session as well as for distance learning, online classes, streaming or video calls with family and friends. The microphone features noise reduction/cancellation, a sampling rate of 8000/16000Hz and accuracy of <5 PPM.

If you can’t install extra software on your computer, Windows users can connect through the built-in Microsoft Camera app (requires Windows 8.1+). Users of macOS or Mac OS X 10.6 or later can use the built-in version of QuickTime for viewing the live video and making recordings.

Newer models now come with a hard carry case to help you stay organized and protect your investment. Designed exclusively for the HUE HD camera, this zipper case is a must-have accessory for educators, presenters, and professionals who rely on their document camera for demonstrations, presentations, and more.

I would have been glad to finally remove a serious mistake, but I believe my equations are correct. They agree with those in various textbooks and e.g. also in Wikipedia. Your argument concerning energy swapping back and forth between electric and magnetic fields looks somewhat plausible but is not accurate.

Ideal for homeschooling, online tutoring or video calls with family and friends. Simply connect the camera to a USB port and use it straight away with your preferred video conferencing app.

*Plug & Play means that the user does not have to configure the camera for it to work. The operating system will automatically detect it as a USB device. The user simply chooses which application they want to use (i.e. Zoom, QuickTime or OBS Studio) and selects the HUE camera from the available devices in its settings. The HUE HD camera does not come with any additional software to install.

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A circular polarization state can mathematically be obtained as a superposition of electric field oscillations in the vertical and horizontal direction, both with equal strength but a relative phase change of 90°. Effectively, this leads to a rapid rotation of the electric field vector – once per optical cycle – which maintains a constant magnitude.

The award-winning HUE HD USB document camera and visualiser is ideal for video conferencing, streaming, teaching in a classroom or remotely, animating or working from home.

The optical lens has a focus range of 5cm ~ infinity. The manual focus can be used to magnify moving or handheld objects without the continuous automatic adjustments which occur with an autofocus lens.

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A radially polarized laser beam may be generated from a linearly polarized beam with some optical element, but it is also possible to obtain radially polarized emission directly from a laser. The advantage of this approach, applied in a solid-state bulk laser, is that depolarization loss may be avoided [4]. Furthermore, there are applications benefiting from radially polarized light.

Share students’ work for peer assessment, live marking, ‘what a good one looks like’ (WAGOLL) or demonstrate a technique or science experiment for the whole class. Record lessons, presentations and instructional videos. Create a content library for flipped learning, catch-up, revision and continual professional development (CPD).

HUE cameras work with a wide range of video conferencing and picture editing software. Any software that is designed to work with a USB camera should work using HUE as its video input source, including Zoom, Google Meet, MS Teams, Skype, QuickTime, Seesaw, Loom, FaceTime, Discord, Twitch, Slack, OBS, Webex, Chime and many more. You can find guides for using popular video conferencing apps with your HUE camera in our Tutorials section.

A light beam is called unpolarized when the analysis with a polarizer results in 50% of the power to be in each polarization state, regardless of the rotational orientation. Microscopically, this usually means that the polarization state is randomly fluctuating, so that on average no polarization is detected. Note that such fluctuations are not possible for strictly monochromatic light.

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Use it for close-up work, especially where it is difficult or dangerous for everyone to watch at the same time (e.g. in a chemistry class). It can act as a basic microscope, display maths manipulatives or, for example, demonstrate how a calculator is being used.

We have been using the HUE cameras at our school for a few years now. We have a set which we use in conjunction with the laptops. They are very easy for our year 2s to use and we have made some great animations with them. They are also very good to use as visualisers to project our children’s work onto the interactive whiteboards for a class discussion. Some items made from brightly coloured plastic don’t work but these cameras are working really well and a great, cheap resource for any classroom.

P polarized lightformula

You can move it around freely and adjust the focus during a presentation without needing to change any settings on your computer.

Using our advertising package, you can display your logo, further below your product description, and these will been seen by many photonics professionals.

Its integrated microphone, together with manual focusing ring, will allow you to capture, stream and share high-quality video, audio and images with friends, family, colleagues, customers or students. The unique, flexible design is multifunctional, portable and built to last.

A microscope objective is composed of a complex set of lenses and optics, and different objectives are designed for different imaging tasks.

P polarized lightapp

Whether you’re working remotely (WFH) or in the office, you can easily prepare a presentation, interview candidates, give demonstrations or conduct online consultations (e.g. teletherapy).

Vizianagaram (Telugu: విజయనగరo; ) is the main city of the Vizianagaram District of North Eastern Andhra Pradesh in Southern India.

In this course, you will be introduced to the subject of optics. We will discuss fundamental definitions, basic properties of light, and general manufacturing ...

Jones vectors can be used only for fully defined polarization states, not for unpolarized or partially polarized beams (see below) having a stochastic nature.

Prematex Roofing LLC is a roofing company based in McKinney, TX, specializing in a variety of roofing services for residential and commercial properties.

The document camera is working very well! It has made things easier in the classroom as I do not have to scan everything before showing it to my kids! The cameras have amazing quality and the possibilities are limitless!

The degree of linear polarization is often quantified with the polarization extinction ratio (PER), defined as the ratio of optical powers in the two polarization directions. It is often specified in decibels, and measured by recording the orientation-dependent power transmission of a polarizer. Of course, the extinction ratio of the polarizer itself must be higher than that of the laser beam.

V Hartmann · 2020 · 20 — Photosystem II (PSII) is the only enzyme that catalyzes light-induced water oxidation, the basis for its application as a biophotoanode in various ...

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If the oscillations of the horizontal and vertical electric field vector do not have the same strengths, one has the case of an elliptical polarization, where the electric field vector, projected to a plane perpendicular to the propagation direction, moves along an ellipse.

The camera’s agile gooseneck can be freely positioned for a multitude of uses. Angle it straight ahead to use it as a facecam, position it downwards for use as a document camera or move the neck in real-time while examining an object. Move the camera, not your laptop.

The Plug & Play camera can also be used without its base and cable, keeping your workspace clutter-free. Compact, light and portable, it is easy to carry between work and home. The solid, non-slip base has a small footprint and will fit neatly on your desk.

Reflection off Imperfect Plane Mirrors · Mirrors do not have perfect surfaces, i.e. a flat mirror is not perfectly flat. · Not all the incoming light is reflected ...

Clearly one of the BEST Educational investments made during a pandemic is my @HUEHD camera! Bought June 2020. It’s helped me even during remote learning or inclement weather days @WROdellElem pic.twitter.com/49KVS3wiuQ

I have used the HUE cameras in several schools in the UK as both visualisers and cameras to easily create images for animations. They are so easy to set up and to use.

The manoeuvrability of the camera is invaluable when I am teaching using manipulatives. The children can see what I’m doing via my HUE HD and they copy me and I can watch what they’re doing, step by step via their HUE HDs. Also for bookwork – I can watch them work something out and get inside their heads to understand how their minds are working, which means I can help them every step of the way until they can find their own way.